Adverse Reactions and Nursing Management

Every nurse who administers vaccines must be prepared to recognize and manage adverse reactions — from the extremely common (injection site soreness) to the extremely rare but potentially fatal (anaphylaxis). Understanding the spectrum of adverse reactions, their clinical significance, and the appropriate nursing response is a core immunization competency. For the REx-PN exam, adverse reaction questions focus on: (1) recognition of anaphylaxis vs normal reaction vs syncope; (2) correct first-line treatment for anaphylaxis (epinephrine IM — not antihistamine); (3) post-MMR febrile seizure management; and (4) CAEFISS reporting obligations. The exam may also test SIRVA recognition and prevention. On the exam, writers often pair stable-sounding options with unstable data—notice the mismatch before you commit. If the stem names a license or role, reread that line; scope errors are classic trap answers even when the clinical topic is familiar. Run a 60-second scan: breathing work and oxygenation, perfusion and end organs, neuro baseline, likely infection sources, and devices that can fail quietly. When two answers feel partly right, pick the one that reduces imminent harm and matches orders for the role you...